Comment # 4 on bug 1017461 from Ronan Chagas

Hi guys!

Yes, this is a **very** serious problem. I have already reported that my system
is unresponsive every time btrfs maintenance starts, and I am using Tumbleweed.
I posted to the mailing list, but received just one answer:

https://lists.opensuse.org/opensuse-factory/2016-09/msg00130.html

Indeed, when I **disabled** quotas here, then the freeze stopped. Thanks for
that workaround! Actually, a btrfs developer (Chris Murphy) has already warned
that the quota feature is not stable in btrfs and must not be used by default
on production systems:

https://lists.opensuse.org/opensuse-factory/2016-09/msg00032.html

However, some openSUSE developers contradicted Chris, specially Richard Brown:

https://lists.opensuse.org/opensuse-factory/2016-09/msg00085.html

Hence, nobody took the advice and quotas were enabled by default in Leap 42.2.

Maybe now with this bug, which I can confirm that is happening in **all** my
machines with quotas enabled (HP Workstation, Dell laptop, and a Macbook), this
problem can be revisited. Furthermore, disabling quota fixes it also in all my
machines.